After upgrading got Function isLogged() fatal error

Well after seeing that most things aply to v1.3.2, I decided to carefully upgrade following every step posted in this forum. After ahving to rename a few tables in phpmyadmin.. and trying to acees my site to complete installation I got this error Fatal error: Call to a member function isLogged() on a non-object in /home5/heartld7/public_html/shop/admin/controller/common/header.php on line 9...please help so I can proceed on with install...right now at a standstill..

This is add to original post. When I go to my admin panel...I am denied access to anything that is new..i.e., error logs, and measurement class..I can access pretty much everything else. I imagine this has something to do with the error I get when I try to visit my site: http://www.heartlandmannequins.com. Thanks in advance for the assistance.

UPDATE...problem fixed...had to reload admin portion of 1.3.2, works fine although I lost my products..ow well only had test products in there.